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Finding the Fourth Proportional to 964.05, 1,445.52 and 305.80

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Solution

The fourth proportional to 964.05, 1,445.52 and 305.80 is: 458.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.05 : 1,445.52 = 305.80 : x
  2. Step 2: Convert to fraction form
    964.05/1,445.52 = 305.80/x
  3. Step 3: Cross multiply
    964.05x = 1,445.52 × 305.80
  4. Step 4: Simplify right side
    964.05x = 442,037.55
  5. Step 5: Solve for x
    x = 442,037.55/964.05
  6. Step 6: Final answer
    x = 458.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.